/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/HierarchyEditor/NiagaraHierarchyViewModelBase.h
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< struct [FNiagaraHierarchyRootViewModel](API\Plugins\NiagaraEditor\ViewModels\HierarchyEditor\FNiagaraHierarch-_9) > GetHierarchyRootViewModel() const